same as any other tree really. put a star on top, bunch of lights, your favourite ornaments [tinsel or garland if you like it] and place gifts bellow. you should put some lights on a tree outside too if you have one near your house. try to get red, green, gold, and silver. [some people like blue, but i don't think that's a traditional Yule colour, not that it matters too much.] just don't overload the tree i think is the only thing you need to look out for really.